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WO2003018251A1 - Procede et dispositif pour la determination de la position d'outils pouvant etre entraines en rotation - Google Patents

Procede et dispositif pour la determination de la position d'outils pouvant etre entraines en rotation Download PDF

Info

Publication number
WO2003018251A1
WO2003018251A1 PCT/EP2002/009183 EP0209183W WO03018251A1 WO 2003018251 A1 WO2003018251 A1 WO 2003018251A1 EP 0209183 W EP0209183 W EP 0209183W WO 03018251 A1 WO03018251 A1 WO 03018251A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
measuring
measuring beam
rotation
determining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2002/009183
Other languages
German (de)
English (en)
Inventor
Heribert Bucher
Wolfgang Reiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blum Novotest GmbH
Original Assignee
Blum Novotest GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10140822A external-priority patent/DE10140822B4/de
Application filed by Blum Novotest GmbH filed Critical Blum Novotest GmbH
Priority to EP02760321A priority Critical patent/EP1419029A1/fr
Publication of WO2003018251A1 publication Critical patent/WO2003018251A1/fr
Priority to US10/784,069 priority patent/US7256898B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
    • B23Q17/2457—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces of tools
    • B23Q17/2466—Diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • B23Q17/248—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves using special electromagnetic means or methods
    • B23Q17/2485—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves using special electromagnetic means or methods using interruptions of light beams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/21—Cutting by use of rotating axially moving tool with signal, indicator, illuminator or optical means

Definitions

  • the present invention relates to the measurement of tools that can be driven in rotation, and in particular to the determination of the position of a tool that can be driven in rotation in a machine tool.
  • the position of a rotating tool in machine tools for machining it is known to use light barriers and in particular laser light barriers.
  • the tool to be measured is moved in the direction of the measuring beam, the moment at which the tool interrupts the measuring beam being used to calculate the position of the tool in the machine tool.
  • the light barrier outputs a signal that indicates to a machine tool controller the moment of the beam interruption.
  • the control of the machine tool records its current axis positions and uses it to determine the current position of the tool using a calibration assigned to the relevant tool.
  • a disadvantage of this procedure is that it is not possible to distinguish between interruptions in the measuring beam due to the tool and beam interruptions due to particles present in the area of the tool (eg coolant drops, flying chips, lubricant splashes, etc.). This can lead to inaccurate or erroneous measurements with uncertainties that are no longer tolerable, to the point that the measurement process is terminated and the machine comes to a standstill.
  • the object of the present invention is to provide a solution to avoid the interferences of (air-polluting) particles located in the area of a tool to be rotatably driven when determining the position of the tool in a machine tool.
  • the present invention provides a method and a device in which the moment of separation of a tool to be measured and a measuring beam is used to determine the position of the tool.
  • the present invention is used to determine the position of tools which can be driven in rotation in machine tools for machining (for example turning, planing, milling, drilling, countersinking, rubbing, grinding, eroding and the like).
  • the interruption of the measuring beam by the tool is understood to mean a state in which the tool at least partially shades the measuring beam.
  • a limit can e.g. can be defined as a function of the amount of light energy that is at least required in order to output a signal by means of a receiver used for the measuring beam, which indicates the reception of the measuring beam.
  • there may be an interruption if partial shadowing of the measuring beam by the tool leads to a transmitted amount of light energy of 50% of the amount of light energy emitted.
  • the known, approximate dimensions of the tool to be measured can be used to determine this starting position.
  • This positioning can also be achieved by moving the tool by activating individual or multiple axes of the machine tool in the manner of a search movement until the tool is in the measuring beam. The tool is rotated during or afterwards.
  • a direction of movement is selected for the position determination. This can be, for example, the axial direction of a drill to be measured, or the direction of a radius if a milling cutter is to be measured.
  • the tool is then moved relative to the measuring beam at a selected, as constant as possible speed in the direction away from it, ie a movement is tion of the tool in the selected direction of movement.
  • the tool is moved to a position referred to below as the measuring position, in which the beam path of the measuring beam is no longer interrupted by the tool, ie the tool is separated from the measuring beam.
  • the moment of separation is reached when the interruption of the measuring beam by the tool leads to (partial) shadowing, in which the amount of light energy transmitted is sufficient to trigger a signal from the receiver.
  • This amount of light energy can be defined as in the above positioning of the tool in the measuring beam or differ from it.
  • the measurement position is, for example, by using a controller
  • Machine tool determined axis positions detected and used to determine a position for the tool.
  • the measurement position i.e. the moment of separation is recorded if the measuring beam is not interrupted for at least one revolution of the tool.
  • the tool is preferably initially positioned in the measuring beam in such a way that its beam path is interrupted permanently, periodically, at predetermined times or at predetermined time intervals.
  • the tool is preferably rotated at a speed which is relatively high in relation to the speed of movement, in order to minimize the measurement deviation when detecting the moment of separation of the tool and the measurement beam due to the tool rotation. It is possible to correct the measurement deviation as a function of the measurement speed for the measurement beam and the delay time that results from the speed and the speed of movement of the tool.
  • FIG. 1 shows schematic representations of a measuring arrangement for determining the position of a tool which can be driven in rotation with a measuring beam
  • the position of a tool which can be driven in rotation and is generally designated 14 and in particular its area 16 to be used for machining is determined in a machine tool (not shown) by means of a measuring device with a transmitter 10 and a receiver 12.
  • the measuring device includes a light barrier with a measuring beam 18, which is a light beam with a focused beam path or a laser beam.
  • the area 16 of the tool 14 is moved according to FIG. 2 in the direction of the arrow shown there to the measuring beam 18 until it is interrupted by the area 16 according to FIG. 3. Accordingly, a signal is output by the receiver 12, which indicates the interruption of the measuring beam 18.
  • the tool 14 is rotated and moved away from the measuring beam 18, e.g. with a predetermined, constant, as high as possible speed and / or a predetermined, constant, as low as possible speed.
  • This movement selected for the position determination can, as shown in FIG. 4, be opposite to the direction of movement according to FIG. H. in the direction of the arrow shown in Fig. 4, or carried out in the opposite direction.
  • the tool 14 is moved away from the measuring beam 18 in such a way that the measuring beam 18 moves relative to an area of the machining area 16 that is suitable for determining the position of the tool 14.
  • the receiver 12 If, as shown in FIG. 5, the tool 14 is separated from the measuring beam 18, ie the point in time essentially immediately after the interruption of the measuring beam 18 by the processing area 16, the receiver 12 generates a corresponding the signal on which the axis positions of the machine tool are detected.
  • the moment of separation of the tool 14 and the measuring beam 18 is defined as the moment at which the measuring beam 18 is no longer interrupted for the first time for a complete rotation of the tool 14.
  • the point in time at which the axis positions of the machine tool are detected is delayed by a time period which depends on the duration of a complete revolution of a tool 14 and the speed of movement.
  • a correction factor is calculated from the speed and the speed of movement of the tool 14.
  • the delay times caused by the individual components of the measuring device which arise when processing signals from the measuring device and occur when determining the axis positions, can be taken into account in the correction.
  • a high speed compared to the speed of movement is advantageous.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Selon l'invention, pour la détermination de la position d'outils (14) pouvant être entraînés en rotation, dans des machines-outils, on utilise le moment de la séparation de l'outil dont on veut mesurer la position et d'un faisceau de mesure (18), par exemple un faisceau laser d'une barrière lumineuse. L'outil dont on veut mesurer la position est d'abord positionné de sorte que le faisceau de mesure soit interrompu, puis il est déplacé jusqu'à une position de mesure, position dans laquelle la séparation de l'outil et du faisceau de mesure se produit, et le faisceau de mesure n'est plus interrompu par l'outil pendant au moins une rotation complète. Le moment de la séparation est utilisé pour la détermination de la position de l'outil.
PCT/EP2002/009183 2001-08-20 2002-08-16 Procede et dispositif pour la determination de la position d'outils pouvant etre entraines en rotation Ceased WO2003018251A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02760321A EP1419029A1 (fr) 2001-08-20 2002-08-16 Procede et dispositif pour la determination de la position d'outils pouvant etre entraines en rotation
US10/784,069 US7256898B2 (en) 2001-08-20 2004-02-19 Method and device for determining the position of rotationally drivable tools

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140822A DE10140822B4 (de) 2001-08-20 2001-08-20 Verfahren und Vorrichtung zur Positionsbestimmung von drehantreibbaren Werkzeugen
DE10140822.6 2001-08-20

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10/784,069 Continuation US7256898B2 (en) 2001-08-20 2004-02-19 Method and device for determining the position of rotationally drivable tools
US10/784,069 Continuation-In-Part US7256898B2 (en) 2001-08-20 2004-02-19 Method and device for determining the position of rotationally drivable tools

Publications (1)

Publication Number Publication Date
WO2003018251A1 true WO2003018251A1 (fr) 2003-03-06

Family

ID=7696048

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/009183 Ceased WO2003018251A1 (fr) 2001-08-20 2002-08-16 Procede et dispositif pour la determination de la position d'outils pouvant etre entraines en rotation

Country Status (3)

Country Link
US (1) US7256898B2 (fr)
EP (1) EP1419029A1 (fr)
WO (1) WO2003018251A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010099845A1 (fr) * 2009-03-06 2010-09-10 Thyssenkrupp Drauz Nothelfer Gmbh Dispositif d'usinage et procédé pour garantir une profondeur d'usinage prédéfinie
EP3413150A1 (fr) * 2017-06-09 2018-12-12 Blum-Novotest GmbH Dispositif et procédé de mesure et de contrôle d'un outil pouvant être entraîné en rotation dans une machine-outil

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337489B4 (de) * 2003-08-14 2007-04-19 P & L Gmbh & Co. Kg Verfahren zur automatischen Werkzeugverschleißkorrektur
DE102004021254A1 (de) * 2004-04-30 2005-11-24 P & L Gmbh & Co. Kg Verfahren zur Vermessung eines Werkzeugs einer Werkzeugmaschine
JP4950108B2 (ja) * 2008-03-27 2012-06-13 株式会社森精機製作所 工作機械の位置補正方法及びその装置
WO2014028664A2 (fr) * 2012-08-17 2014-02-20 Illinois Tool Works Inc. Scie de préparation d'échantillons
DE102015225127A1 (de) 2015-12-14 2017-06-14 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung und Verfahren mit einer Handwerkzeugmaschinenvorrichtung

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US3900738A (en) * 1973-05-23 1975-08-19 Lockheed Missiles Space Non-contact measuring gauge
US4018113A (en) * 1975-03-05 1977-04-19 Gebr. Boehringer G.M.B.H. Apparatus for adjusting the cutting edge of a tool in a machine tool
DE3905949A1 (de) * 1989-02-25 1990-08-30 Herbert Prof Dr Ing Schulz Verfahren zum vermessen von schneidkanten
DE4238504A1 (de) * 1992-11-14 1994-05-19 Chiron Werke Gmbh Verfahren zum Vermessen eines Werkzeuges
DE19851411A1 (de) * 1998-11-07 2000-05-18 Ds Technologie Werkzeugmaschin Verfahren und Vorrichtung zum Vermessen von Fräs- oder Bohrwerkzeugen und zur Geometriekompensation im Automatikbetrieb an Werkzeugmaschinen
WO2001028737A1 (fr) * 1999-10-19 2001-04-26 Blum-Novotest Gmbh Procede et dispositif permettant de tester la geometrie du tranchant d'un outil pouvant etre entraine en rotation
WO2001038822A1 (fr) * 1999-11-22 2001-05-31 Renishaw Plc Dispositif de mesure optique permettant de mesurer des objets sur des machines

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US4021119A (en) * 1975-06-24 1977-05-03 Honeywell Inc. Position gauge
US4576482A (en) * 1979-09-07 1986-03-18 Diffracto Ltd. Electro-optical inspection
US4966460A (en) * 1987-10-28 1990-10-30 The Ingersoll Milling Machine Company Laser gauging of rotary cutting tools
CH677892A5 (fr) * 1988-12-21 1991-07-15 Rollomatic Sa
US5005978A (en) * 1989-11-06 1991-04-09 Cyberoptics Corporation Apparatus and method for the noncontact measurement of drill diameter, runout, and tip position
IT1288721B1 (it) * 1996-10-02 1998-09-24 Fidia Spa Apparecchiatura per la misura di caratteristiche dimensionali di utensili di macchine per lavorazioni meccaniche.
DE10000491B4 (de) * 2000-01-08 2004-09-23 Kelch Gmbh + Co Werkzeugmaschinenfabrik Verfahren und Messeinrichtung zum Vermessen eines Rotationswerkzeuges
US6793562B2 (en) * 2001-04-23 2004-09-21 Mitsubishi Denki Kabushiki Kaisha Grinder and method of and apparatus for non-contact conditioning of tool
DE10140822B4 (de) 2001-08-20 2005-10-13 Blum-Novotest Gmbh Verfahren und Vorrichtung zur Positionsbestimmung von drehantreibbaren Werkzeugen
ITBO20030536A1 (it) * 2003-09-16 2005-03-17 Marposs Spa Metodo e sistema per controllare la posizione di una parte meccanica

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900738A (en) * 1973-05-23 1975-08-19 Lockheed Missiles Space Non-contact measuring gauge
US4018113A (en) * 1975-03-05 1977-04-19 Gebr. Boehringer G.M.B.H. Apparatus for adjusting the cutting edge of a tool in a machine tool
DE3905949A1 (de) * 1989-02-25 1990-08-30 Herbert Prof Dr Ing Schulz Verfahren zum vermessen von schneidkanten
DE4238504A1 (de) * 1992-11-14 1994-05-19 Chiron Werke Gmbh Verfahren zum Vermessen eines Werkzeuges
DE19851411A1 (de) * 1998-11-07 2000-05-18 Ds Technologie Werkzeugmaschin Verfahren und Vorrichtung zum Vermessen von Fräs- oder Bohrwerkzeugen und zur Geometriekompensation im Automatikbetrieb an Werkzeugmaschinen
WO2001028737A1 (fr) * 1999-10-19 2001-04-26 Blum-Novotest Gmbh Procede et dispositif permettant de tester la geometrie du tranchant d'un outil pouvant etre entraine en rotation
WO2001038822A1 (fr) * 1999-11-22 2001-05-31 Renishaw Plc Dispositif de mesure optique permettant de mesurer des objets sur des machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010099845A1 (fr) * 2009-03-06 2010-09-10 Thyssenkrupp Drauz Nothelfer Gmbh Dispositif d'usinage et procédé pour garantir une profondeur d'usinage prédéfinie
EP3413150A1 (fr) * 2017-06-09 2018-12-12 Blum-Novotest GmbH Dispositif et procédé de mesure et de contrôle d'un outil pouvant être entraîné en rotation dans une machine-outil

Also Published As

Publication number Publication date
US7256898B2 (en) 2007-08-14
EP1419029A1 (fr) 2004-05-19
US20040165197A1 (en) 2004-08-26

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